2 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
4 * Copyright (c) 2012, 2017, Intel Corporation.
6 * Author: Zach Brown <zab@zabbo.net>
7 * Author: Peter J. Braam <braam@clusterfs.com>
8 * Author: Phil Schwan <phil@clusterfs.com>
9 * Author: Eric Barton <eric@bartonsoftware.com>
11 * This file is part of Lustre, https://wiki.whamcloud.com/
13 * Portals is free software; you can redistribute it and/or
14 * modify it under the terms of version 2 of the GNU General Public
15 * License as published by the Free Software Foundation.
17 * Portals is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with Portals; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 * pro_send_hello : send hello message
32 * pro_recv_hello : receive hello message
33 * pro_pack : pack message header
34 * pro_unpack : unpack message header
35 * pro_queue_tx_zcack() : Called holding BH lock: kss_lock
36 * return 1 if ACK is piggybacked, otherwise return 0
37 * pro_queue_tx_msg() : Called holding BH lock: kss_lock
38 * return the ACK that piggybacked by my message, or NULL
39 * pro_handle_zcreq() : handler of incoming ZC-REQ
40 * pro_handle_zcack() : handler of incoming ZC-ACK
41 * pro_match_tx() : Called holding glock
44 static struct ksock_tx *
45 ksocknal_queue_tx_msg_v1(struct ksock_conn *conn, struct ksock_tx *tx_msg)
47 /* V1.x, just enqueue it */
48 list_add_tail(&tx_msg->tx_list, &conn->ksnc_tx_queue);
53 ksocknal_next_tx_carrier(struct ksock_conn *conn)
55 struct ksock_tx *tx = conn->ksnc_tx_carrier;
57 /* Called holding BH lock: conn->ksnc_scheduler->kss_lock */
58 LASSERT(!list_empty(&conn->ksnc_tx_queue));
61 /* Next TX that can carry ZC-ACK or LNet message */
62 if (tx->tx_list.next == &conn->ksnc_tx_queue) {
63 /* no more packets queued */
64 conn->ksnc_tx_carrier = NULL;
66 conn->ksnc_tx_carrier = list_next_entry(tx, tx_list);
67 LASSERT(conn->ksnc_tx_carrier->tx_msg.ksm_type ==
73 ksocknal_queue_tx_zcack_v2(struct ksock_conn *conn,
74 struct ksock_tx *tx_ack, __u64 cookie)
76 struct ksock_tx *tx = conn->ksnc_tx_carrier;
78 LASSERT (tx_ack == NULL ||
79 tx_ack->tx_msg.ksm_type == KSOCK_MSG_NOOP);
82 * Enqueue or piggyback tx_ack / cookie
83 * . no tx can piggyback cookie of tx_ack (or cookie), just
84 * enqueue the tx_ack (if tx_ack != NUL) and return NULL.
85 * . There is tx can piggyback cookie of tx_ack (or cookie),
86 * piggyback the cookie and return the tx.
90 list_add_tail(&tx_ack->tx_list,
91 &conn->ksnc_tx_queue);
92 conn->ksnc_tx_carrier = tx_ack;
97 if (tx->tx_msg.ksm_type == KSOCK_MSG_NOOP) {
98 /* tx is noop zc-ack, can't piggyback zc-ack cookie */
100 list_add_tail(&tx_ack->tx_list,
101 &conn->ksnc_tx_queue);
105 LASSERT(tx->tx_msg.ksm_type == KSOCK_MSG_LNET);
106 LASSERT(tx->tx_msg.ksm_zc_cookies[1] == 0);
109 cookie = tx_ack->tx_msg.ksm_zc_cookies[1];
111 /* piggyback the zc-ack cookie */
112 tx->tx_msg.ksm_zc_cookies[1] = cookie;
113 /* move on to the next TX which can carry cookie */
114 ksocknal_next_tx_carrier(conn);
119 static struct ksock_tx *
120 ksocknal_queue_tx_msg_v2(struct ksock_conn *conn, struct ksock_tx *tx_msg)
122 struct ksock_tx *tx = conn->ksnc_tx_carrier;
126 * . If there is no NOOP on the connection, just enqueue
127 * tx_msg and return NULL
128 * . If there is NOOP on the connection, piggyback the cookie
129 * and replace the NOOP tx, and return the NOOP tx.
131 if (tx == NULL) { /* nothing on queue */
132 list_add_tail(&tx_msg->tx_list, &conn->ksnc_tx_queue);
133 conn->ksnc_tx_carrier = tx_msg;
137 if (tx->tx_msg.ksm_type == KSOCK_MSG_LNET) { /* nothing to carry */
138 list_add_tail(&tx_msg->tx_list, &conn->ksnc_tx_queue);
142 LASSERT (tx->tx_msg.ksm_type == KSOCK_MSG_NOOP);
144 /* There is a noop zc-ack can be piggybacked */
145 tx_msg->tx_msg.ksm_zc_cookies[1] = tx->tx_msg.ksm_zc_cookies[1];
146 ksocknal_next_tx_carrier(conn);
148 /* use new_tx to replace the noop zc-ack packet */
149 list_splice(&tx->tx_list, &tx_msg->tx_list);
155 ksocknal_queue_tx_zcack_v3(struct ksock_conn *conn,
156 struct ksock_tx *tx_ack, __u64 cookie)
160 if (conn->ksnc_type != SOCKLND_CONN_ACK)
161 return ksocknal_queue_tx_zcack_v2(conn, tx_ack, cookie);
163 /* non-blocking ZC-ACK (to router) */
164 LASSERT (tx_ack == NULL ||
165 tx_ack->tx_msg.ksm_type == KSOCK_MSG_NOOP);
167 if ((tx = conn->ksnc_tx_carrier) == NULL) {
168 if (tx_ack != NULL) {
169 list_add_tail(&tx_ack->tx_list,
170 &conn->ksnc_tx_queue);
171 conn->ksnc_tx_carrier = tx_ack;
176 /* conn->ksnc_tx_carrier != NULL */
179 cookie = tx_ack->tx_msg.ksm_zc_cookies[1];
181 if (cookie == SOCKNAL_KEEPALIVE_PING) /* ignore keepalive PING */
184 if (tx->tx_msg.ksm_zc_cookies[1] == SOCKNAL_KEEPALIVE_PING) {
185 /* replace the keepalive PING with a real ACK */
186 LASSERT (tx->tx_msg.ksm_zc_cookies[0] == 0);
187 tx->tx_msg.ksm_zc_cookies[1] = cookie;
191 if (cookie == tx->tx_msg.ksm_zc_cookies[0] ||
192 cookie == tx->tx_msg.ksm_zc_cookies[1]) {
193 CWARN("%s: duplicated ZC cookie: %llu\n",
194 libcfs_id2str(conn->ksnc_peer->ksnp_id), cookie);
195 return 1; /* XXX return error in the future */
198 if (tx->tx_msg.ksm_zc_cookies[0] == 0) {
199 /* NOOP tx has only one ZC-ACK cookie, can carry at least one more */
200 if (tx->tx_msg.ksm_zc_cookies[1] > cookie) {
201 tx->tx_msg.ksm_zc_cookies[0] = tx->tx_msg.ksm_zc_cookies[1];
202 tx->tx_msg.ksm_zc_cookies[1] = cookie;
204 tx->tx_msg.ksm_zc_cookies[0] = cookie;
207 if (tx->tx_msg.ksm_zc_cookies[0] - tx->tx_msg.ksm_zc_cookies[1] > 2) {
208 /* not likely to carry more ACKs, skip it to simplify logic */
209 ksocknal_next_tx_carrier(conn);
215 /* takes two or more cookies already */
217 if (tx->tx_msg.ksm_zc_cookies[0] > tx->tx_msg.ksm_zc_cookies[1]) {
220 /* two separated cookies: (a+2, a) or (a+1, a) */
221 LASSERT (tx->tx_msg.ksm_zc_cookies[0] -
222 tx->tx_msg.ksm_zc_cookies[1] <= 2);
224 if (tx->tx_msg.ksm_zc_cookies[0] -
225 tx->tx_msg.ksm_zc_cookies[1] == 2) {
226 if (cookie == tx->tx_msg.ksm_zc_cookies[1] + 1)
228 } else if (cookie == tx->tx_msg.ksm_zc_cookies[1] - 1) {
229 tmp = tx->tx_msg.ksm_zc_cookies[1];
230 } else if (cookie == tx->tx_msg.ksm_zc_cookies[0] + 1) {
231 tmp = tx->tx_msg.ksm_zc_cookies[0];
235 /* range of cookies */
236 tx->tx_msg.ksm_zc_cookies[0] = tmp - 1;
237 tx->tx_msg.ksm_zc_cookies[1] = tmp + 1;
242 /* ksm_zc_cookies[0] < ksm_zc_cookies[1], it is range of cookies */
243 if (cookie >= tx->tx_msg.ksm_zc_cookies[0] &&
244 cookie <= tx->tx_msg.ksm_zc_cookies[1]) {
245 CWARN("%s: duplicated ZC cookie: %llu\n",
246 libcfs_id2str(conn->ksnc_peer->ksnp_id), cookie);
247 return 1; /* XXX: return error in the future */
250 if (cookie == tx->tx_msg.ksm_zc_cookies[1] + 1) {
251 tx->tx_msg.ksm_zc_cookies[1] = cookie;
255 if (cookie == tx->tx_msg.ksm_zc_cookies[0] - 1) {
256 tx->tx_msg.ksm_zc_cookies[0] = cookie;
261 /* failed to piggyback ZC-ACK */
262 if (tx_ack != NULL) {
263 list_add_tail(&tx_ack->tx_list, &conn->ksnc_tx_queue);
264 /* the next tx can piggyback at least 1 ACK */
265 ksocknal_next_tx_carrier(conn);
272 ksocknal_match_tx(struct ksock_conn *conn, struct ksock_tx *tx, int nonblk)
276 #if SOCKNAL_VERSION_DEBUG
277 if (!*ksocknal_tunables.ksnd_typed_conns)
278 return SOCKNAL_MATCH_YES;
281 if (tx == NULL || tx->tx_lnetmsg == NULL) {
283 nob = offsetof(struct ksock_msg, ksm_u);
285 nob = tx->tx_lnetmsg->msg_len +
286 ((conn->ksnc_proto == &ksocknal_protocol_v1x) ?
287 sizeof(struct lnet_hdr) : sizeof(struct ksock_msg));
290 /* default checking for typed connection */
291 switch (conn->ksnc_type) {
293 CERROR("ksnc_type bad: %u\n", conn->ksnc_type);
295 case SOCKLND_CONN_ANY:
296 return SOCKNAL_MATCH_YES;
298 case SOCKLND_CONN_BULK_IN:
299 return SOCKNAL_MATCH_MAY;
301 case SOCKLND_CONN_BULK_OUT:
302 if (nob < *ksocknal_tunables.ksnd_min_bulk)
303 return SOCKNAL_MATCH_MAY;
305 return SOCKNAL_MATCH_YES;
307 case SOCKLND_CONN_CONTROL:
308 if (nob >= *ksocknal_tunables.ksnd_min_bulk)
309 return SOCKNAL_MATCH_MAY;
311 return SOCKNAL_MATCH_YES;
316 ksocknal_match_tx_v3(struct ksock_conn *conn, struct ksock_tx *tx, int nonblk)
320 if (tx == NULL || tx->tx_lnetmsg == NULL)
321 nob = offsetof(struct ksock_msg, ksm_u);
323 nob = tx->tx_lnetmsg->msg_len + sizeof(struct ksock_msg);
325 switch (conn->ksnc_type) {
327 CERROR("ksnc_type bad: %u\n", conn->ksnc_type);
329 case SOCKLND_CONN_ANY:
330 return SOCKNAL_MATCH_NO;
332 case SOCKLND_CONN_ACK:
334 return SOCKNAL_MATCH_YES;
335 else if (tx == NULL || tx->tx_lnetmsg == NULL)
336 return SOCKNAL_MATCH_MAY;
338 return SOCKNAL_MATCH_NO;
340 case SOCKLND_CONN_BULK_OUT:
342 return SOCKNAL_MATCH_NO;
343 else if (nob < *ksocknal_tunables.ksnd_min_bulk)
344 return SOCKNAL_MATCH_MAY;
346 return SOCKNAL_MATCH_YES;
348 case SOCKLND_CONN_CONTROL:
350 return SOCKNAL_MATCH_NO;
351 else if (nob >= *ksocknal_tunables.ksnd_min_bulk)
352 return SOCKNAL_MATCH_MAY;
354 return SOCKNAL_MATCH_YES;
358 /* (Sink) handle incoming ZC request from sender */
360 ksocknal_handle_zcreq(struct ksock_conn *c, __u64 cookie, int remote)
362 struct ksock_peer_ni *peer_ni = c->ksnc_peer;
363 struct ksock_conn *conn;
367 read_lock(&ksocknal_data.ksnd_global_lock);
369 conn = ksocknal_find_conn_locked(peer_ni, NULL, !!remote);
371 struct ksock_sched *sched = conn->ksnc_scheduler;
373 LASSERT(conn->ksnc_proto->pro_queue_tx_zcack != NULL);
375 spin_lock_bh(&sched->kss_lock);
377 rc = conn->ksnc_proto->pro_queue_tx_zcack(conn, NULL, cookie);
379 spin_unlock_bh(&sched->kss_lock);
381 if (rc) { /* piggybacked */
382 read_unlock(&ksocknal_data.ksnd_global_lock);
387 read_unlock(&ksocknal_data.ksnd_global_lock);
389 /* ACK connection is not ready, or can't piggyback the ACK */
390 tx = ksocknal_alloc_tx_noop(cookie, !!remote);
394 if ((rc = ksocknal_launch_packet(peer_ni->ksnp_ni, tx, peer_ni->ksnp_id)) == 0)
397 ksocknal_free_tx(tx);
401 /* (Sender) handle ZC_ACK from sink */
403 ksocknal_handle_zcack(struct ksock_conn *conn, __u64 cookie1, __u64 cookie2)
405 struct ksock_peer_ni *peer_ni = conn->ksnc_peer;
407 struct ksock_tx *tmp;
414 count = (cookie1 > cookie2) ? 2 : (cookie2 - cookie1 + 1);
416 if (cookie2 == SOCKNAL_KEEPALIVE_PING &&
417 conn->ksnc_proto == &ksocknal_protocol_v3x) {
418 /* keepalive PING for V3.x, just ignore it */
419 return count == 1 ? 0 : -EPROTO;
422 spin_lock(&peer_ni->ksnp_lock);
424 list_for_each_entry_safe(tx, tmp, &peer_ni->ksnp_zc_req_list,
426 __u64 c = tx->tx_msg.ksm_zc_cookies[0];
428 if (c == cookie1 || c == cookie2 || (cookie1 < c && c < cookie2)) {
429 tx->tx_msg.ksm_zc_cookies[0] = 0;
430 list_move(&tx->tx_zc_list, &zlist);
437 spin_unlock(&peer_ni->ksnp_lock);
439 while ((tx = list_first_entry_or_null(&zlist, struct ksock_tx,
440 tx_zc_list)) != NULL) {
441 list_del(&tx->tx_zc_list);
442 ksocknal_tx_decref(tx);
445 return count == 0 ? 0 : -EPROTO;
449 ksocknal_send_hello_v1(struct ksock_conn *conn, struct ksock_hello_msg *hello)
451 struct socket *sock = conn->ksnc_sock;
452 struct lnet_hdr *hdr;
453 struct lnet_magicversion *hmv;
457 BUILD_BUG_ON(sizeof(struct lnet_magicversion) !=
458 offsetof(struct lnet_hdr, src_nid));
460 LIBCFS_ALLOC(hdr, sizeof(*hdr));
462 CERROR("Can't allocate struct lnet_hdr\n");
466 hmv = (struct lnet_magicversion *)&hdr->dest_nid;
468 /* Re-organize V2.x message header to V1.x (struct lnet_hdr)
469 * header and send out */
470 hmv->magic = cpu_to_le32 (LNET_PROTO_TCP_MAGIC);
471 hmv->version_major = cpu_to_le16 (KSOCK_PROTO_V1_MAJOR);
472 hmv->version_minor = cpu_to_le16 (KSOCK_PROTO_V1_MINOR);
474 if (the_lnet.ln_testprotocompat) {
475 /* single-shot proto check */
476 if (test_and_clear_bit(0, &the_lnet.ln_testprotocompat))
477 hmv->version_major++; /* just different! */
479 if (test_and_clear_bit(1, &the_lnet.ln_testprotocompat))
480 hmv->magic = LNET_PROTO_MAGIC;
483 hdr->src_nid = cpu_to_le64 (hello->kshm_src_nid);
484 hdr->src_pid = cpu_to_le32 (hello->kshm_src_pid);
485 hdr->type = cpu_to_le32 (LNET_MSG_HELLO);
486 hdr->payload_length = cpu_to_le32 (hello->kshm_nips * sizeof(__u32));
487 hdr->msg.hello.type = cpu_to_le32 (hello->kshm_ctype);
488 hdr->msg.hello.incarnation = cpu_to_le64 (hello->kshm_src_incarnation);
490 rc = lnet_sock_write(sock, hdr, sizeof(*hdr), lnet_acceptor_timeout());
492 CNETERR("Error %d sending HELLO hdr to %pISp\n",
493 rc, &conn->ksnc_peeraddr);
497 if (hello->kshm_nips == 0)
500 for (i = 0; i < (int) hello->kshm_nips; i++) {
501 hello->kshm_ips[i] = __cpu_to_le32 (hello->kshm_ips[i]);
504 rc = lnet_sock_write(sock, hello->kshm_ips,
505 hello->kshm_nips * sizeof(__u32),
506 lnet_acceptor_timeout());
508 CNETERR("Error %d sending HELLO payload (%d) to %pISp\n",
509 rc, hello->kshm_nips,
510 &conn->ksnc_peeraddr);
513 LIBCFS_FREE(hdr, sizeof(*hdr));
519 ksocknal_send_hello_v2(struct ksock_conn *conn, struct ksock_hello_msg *hello)
521 struct socket *sock = conn->ksnc_sock;
524 hello->kshm_magic = LNET_PROTO_MAGIC;
525 hello->kshm_version = conn->ksnc_proto->pro_version;
527 if (the_lnet.ln_testprotocompat) {
528 /* single-shot proto check */
529 if (test_and_clear_bit(0, &the_lnet.ln_testprotocompat))
530 hello->kshm_version++; /* just different! */
533 rc = lnet_sock_write(sock, hello, offsetof(struct ksock_hello_msg, kshm_ips),
534 lnet_acceptor_timeout());
537 CNETERR("Error %d sending HELLO hdr to %pISp\n",
538 rc, &conn->ksnc_peeraddr);
542 if (hello->kshm_nips == 0)
545 rc = lnet_sock_write(sock, hello->kshm_ips,
546 hello->kshm_nips * sizeof(__u32),
547 lnet_acceptor_timeout());
549 CNETERR("Error %d sending HELLO payload (%d) to %pISp\n", rc,
551 &conn->ksnc_peeraddr);
558 ksocknal_recv_hello_v1(struct ksock_conn *conn, struct ksock_hello_msg *hello,
561 struct socket *sock = conn->ksnc_sock;
562 struct lnet_hdr *hdr;
566 LIBCFS_ALLOC(hdr, sizeof(*hdr));
568 CERROR("Can't allocate struct lnet_hdr\n");
572 rc = lnet_sock_read(sock, &hdr->src_nid,
573 sizeof(*hdr) - offsetof(struct lnet_hdr, src_nid),
576 CERROR("Error %d reading rest of HELLO hdr from %pIS\n",
577 rc, &conn->ksnc_peeraddr);
578 LASSERT(rc < 0 && rc != -EALREADY);
582 /* ...and check we got what we expected */
583 if (hdr->type != cpu_to_le32 (LNET_MSG_HELLO)) {
584 CERROR("Expecting a HELLO hdr, but got type %d from %pIS\n",
585 le32_to_cpu(hdr->type),
586 &conn->ksnc_peeraddr);
591 hello->kshm_src_nid = le64_to_cpu (hdr->src_nid);
592 hello->kshm_src_pid = le32_to_cpu (hdr->src_pid);
593 hello->kshm_src_incarnation = le64_to_cpu (hdr->msg.hello.incarnation);
594 hello->kshm_ctype = le32_to_cpu (hdr->msg.hello.type);
595 hello->kshm_nips = le32_to_cpu (hdr->payload_length) /
598 if (hello->kshm_nips > LNET_INTERFACES_NUM) {
599 CERROR("Bad nips %d from ip %pIS\n",
600 hello->kshm_nips, &conn->ksnc_peeraddr);
605 if (hello->kshm_nips == 0)
608 rc = lnet_sock_read(sock, hello->kshm_ips,
609 hello->kshm_nips * sizeof(__u32), timeout);
611 CERROR("Error %d reading IPs from ip %pIS\n",
612 rc, &conn->ksnc_peeraddr);
613 LASSERT(rc < 0 && rc != -EALREADY);
617 for (i = 0; i < (int) hello->kshm_nips; i++) {
618 hello->kshm_ips[i] = __le32_to_cpu(hello->kshm_ips[i]);
620 if (hello->kshm_ips[i] == 0) {
621 CERROR("Zero IP[%d] from ip %pIS\n",
622 i, &conn->ksnc_peeraddr);
628 LIBCFS_FREE(hdr, sizeof(*hdr));
634 ksocknal_recv_hello_v2(struct ksock_conn *conn, struct ksock_hello_msg *hello,
637 struct socket *sock = conn->ksnc_sock;
641 if (hello->kshm_magic == LNET_PROTO_MAGIC)
646 rc = lnet_sock_read(sock, &hello->kshm_src_nid,
647 offsetof(struct ksock_hello_msg, kshm_ips) -
648 offsetof(struct ksock_hello_msg, kshm_src_nid),
651 CERROR("Error %d reading HELLO from %pIS\n",
652 rc, &conn->ksnc_peeraddr);
653 LASSERT(rc < 0 && rc != -EALREADY);
657 if (conn->ksnc_flip) {
658 __swab32s(&hello->kshm_src_pid);
659 __swab64s(&hello->kshm_src_nid);
660 __swab32s(&hello->kshm_dst_pid);
661 __swab64s(&hello->kshm_dst_nid);
662 __swab64s(&hello->kshm_src_incarnation);
663 __swab64s(&hello->kshm_dst_incarnation);
664 __swab32s(&hello->kshm_ctype);
665 __swab32s(&hello->kshm_nips);
668 if (hello->kshm_nips > LNET_INTERFACES_NUM) {
669 CERROR("Bad nips %d from ip %pIS\n",
670 hello->kshm_nips, &conn->ksnc_peeraddr);
674 if (hello->kshm_nips == 0)
677 rc = lnet_sock_read(sock, hello->kshm_ips,
678 hello->kshm_nips * sizeof(__u32), timeout);
680 CERROR("Error %d reading IPs from ip %pIS\n",
681 rc, &conn->ksnc_peeraddr);
682 LASSERT(rc < 0 && rc != -EALREADY);
686 for (i = 0; i < (int) hello->kshm_nips; i++) {
688 __swab32s(&hello->kshm_ips[i]);
690 if (hello->kshm_ips[i] == 0) {
691 CERROR("Zero IP[%d] from ip %pIS\n",
692 i, &conn->ksnc_peeraddr);
701 ksocknal_pack_msg_v1(struct ksock_tx *tx)
703 /* V1.x has no KSOCK_MSG_NOOP */
704 LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP);
705 LASSERT(tx->tx_lnetmsg != NULL);
707 tx->tx_hdr.iov_base = (void *)&tx->tx_lnetmsg->msg_hdr;
708 tx->tx_hdr.iov_len = sizeof(struct lnet_hdr);
710 tx->tx_nob = tx->tx_lnetmsg->msg_len + sizeof(struct lnet_hdr);
711 tx->tx_resid = tx->tx_nob;
715 ksocknal_pack_msg_v2(struct ksock_tx *tx)
717 tx->tx_hdr.iov_base = (void *)&tx->tx_msg;
719 if (tx->tx_lnetmsg != NULL) {
720 LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP);
722 tx->tx_msg.ksm_u.lnetmsg.ksnm_hdr = tx->tx_lnetmsg->msg_hdr;
723 tx->tx_hdr.iov_len = sizeof(struct ksock_msg);
724 tx->tx_resid = tx->tx_nob = sizeof(struct ksock_msg) + tx->tx_lnetmsg->msg_len;
726 LASSERT(tx->tx_msg.ksm_type == KSOCK_MSG_NOOP);
728 tx->tx_hdr.iov_len = offsetof(struct ksock_msg,
729 ksm_u.lnetmsg.ksnm_hdr);
730 tx->tx_resid = tx->tx_nob = offsetof(struct ksock_msg, ksm_u.lnetmsg.ksnm_hdr);
732 /* Don't checksum before start sending, because packet can be piggybacked with ACK */
736 ksocknal_unpack_msg_v1(struct ksock_msg *msg)
739 msg->ksm_type = KSOCK_MSG_LNET;
740 msg->ksm_zc_cookies[0] = msg->ksm_zc_cookies[1] = 0;
744 ksocknal_unpack_msg_v2(struct ksock_msg *msg)
746 return; /* Do nothing */
749 const struct ksock_proto ksocknal_protocol_v1x =
751 .pro_version = KSOCK_PROTO_V1,
752 .pro_send_hello = ksocknal_send_hello_v1,
753 .pro_recv_hello = ksocknal_recv_hello_v1,
754 .pro_pack = ksocknal_pack_msg_v1,
755 .pro_unpack = ksocknal_unpack_msg_v1,
756 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v1,
757 .pro_handle_zcreq = NULL,
758 .pro_handle_zcack = NULL,
759 .pro_queue_tx_zcack = NULL,
760 .pro_match_tx = ksocknal_match_tx
763 const struct ksock_proto ksocknal_protocol_v2x =
765 .pro_version = KSOCK_PROTO_V2,
766 .pro_send_hello = ksocknal_send_hello_v2,
767 .pro_recv_hello = ksocknal_recv_hello_v2,
768 .pro_pack = ksocknal_pack_msg_v2,
769 .pro_unpack = ksocknal_unpack_msg_v2,
770 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v2,
771 .pro_queue_tx_zcack = ksocknal_queue_tx_zcack_v2,
772 .pro_handle_zcreq = ksocknal_handle_zcreq,
773 .pro_handle_zcack = ksocknal_handle_zcack,
774 .pro_match_tx = ksocknal_match_tx
777 const struct ksock_proto ksocknal_protocol_v3x =
779 .pro_version = KSOCK_PROTO_V3,
780 .pro_send_hello = ksocknal_send_hello_v2,
781 .pro_recv_hello = ksocknal_recv_hello_v2,
782 .pro_pack = ksocknal_pack_msg_v2,
783 .pro_unpack = ksocknal_unpack_msg_v2,
784 .pro_queue_tx_msg = ksocknal_queue_tx_msg_v2,
785 .pro_queue_tx_zcack = ksocknal_queue_tx_zcack_v3,
786 .pro_handle_zcreq = ksocknal_handle_zcreq,
787 .pro_handle_zcack = ksocknal_handle_zcack,
788 .pro_match_tx = ksocknal_match_tx_v3